Soak the beans in 1 1/2 litres of water overnight. Bring to the boil with the soaking water and simmer covered for 50-60 minutes. Wash and clean the zucchini, cut them in half lengthwise and slice them. Cut cabanossi into slices. Peel and chop onion and garlic. Wash sage and dab dry.
Cut half of the leaves into strips. Heat the oil, fry the remaining leaves for about 1 minute, remove and drain on kitchen paper. Fry cabanossi and zucchini in the hot oil for about 2 minutes. Add sage strips, garlic and onion, fry briefly. Add tomatoes, chop with a spoon. Add 200 ml water, bring to the boil, stir in the stock. Simmer for 5 minutes. Prepare pasta in boiling salted water according to package instructions. Drain the beans, let them drip off. Remove about 1/3 of the beans and puree finely, stir into the sauce. Season to taste with salt, sugar and pepper. Mix in the remaining beans.
Prepare pasta in boiling salted water according to package instructions. Drain the beans, let them drip off. Remove about 1/3 of the beans and puree finely, stir into the sauce. Season to taste with salt, sugar and pepper. Mix in the remaining beans. Drain the pasta and let it drain. Serve noodles with the sauce. Garnish with the fried sage leaves
12 hours waiting time